NDLI: Optimal content placement for cache-enabled IoT networks with local channel state information based joint transmission

Content Provider	IET Digital Library
Author	Feng, Tianming Shi, Shuo Gu, Shushi Xiang, Wei Gu, Xuemai
Abstract	The large amount of devices deployed for the Internet of Things (IoT) cause a tremendous traffic burden on the cloud server. Caching content at the edge of IoT networks is a promising technology to alleviate the traffic load. However, how to further improve the successful transmission probability (STP) of cache-enabled IoT networks is still an open issue. In this study, the authors propose a novel local channel state information based joint transmission (LC-JT) scheme for cache-enabled IoT networks and design the optimal content placement probability at the cooperative edge base stations, correspondingly. First, they derive an upper bound and a tight approximation for the STP of LC-JT scheme using stochastic geometry. Next, an algorithm is proposed to maximise the approximation of STP in LC-JT by optimising the placement probability vector, which is a non-convex optimisation problem. By utilising some properties of the STP, they obtain the globally optimal solutions in specific cases. Moreover, the locally optimal solutions in general cases are obtained by using the gradient projection method. Finally, numerical results show the optimised content placement strategy can achieve significant gains in STP over several comparative baselines. It verifies that the strategy with LC-JT can considerably enhance the STP in cache-enabled IoT networks.
Starting Page	2628
Ending Page	2638
Page Count	11
ISSN	17518628
Volume Number	14
e-ISSN	17518636
Issue Number	Issue 15, Sep (2020)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-com/14/15
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-com.2020.0167
Journal	IET Communications
Publisher Date	2020-06-12
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Cache Storage Cache-enabled IoT Network Caching Content Cloud Computing Cloud Server Computer Communication Computer Network And Technique Concave Programming Convex Programming Cooperative Communication Cooperative Edge Base Stations Distributed Processing Globally Optimal Solutions Gradient Method Gradient Projection Method Internet of Things Internet Software Local Channel State Information Nonconvex Optimisation Problem Optimal Content Placement Optimal Content Placement Probability Optimisation Technique Optimised Content Placement Strategy Placement Probability Vector Probability Radio Link And Equipment Resource Allocation STP Successful Transmission Probability Telecommunication Traffic Tight Approximation Traffic Load Upper Bound Wireless Channel
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Computer Science Applications

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
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9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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